The cathode is compact, but has an almost unlimited capacity, and achieves high energy densities due to the additional volume available for the zinc anode.Īdditional Information: Zinc-air batteries are ideal for products like hearing aids. The air cathode uses an aqueous alkaline electrolyte to catalytically promote the reaction of oxygen, but is not depleted or transformed at discharge.

Oxygen becomes the cathode reactant, and is diffused directly into the battery. How They Work: Zinc-air batteries use oxygen to produce electrochemical energy. Please note: The manufacturer of the zinc air batteries suggests that once you take the tab off of the battery, allow 2 – 5 minutes before closing the battery door on your hearing aid for maximum usage. Benefits include a long shelf life, stability, and high cell voltage.Įach package includes 40 individual hearing aid batteries. Power One batteries feature stainless steel housing to provide protection against corrosion, and a three-fold sealing design and PTFE film technology to increase reliability. These batteries have a high energy density, exhibiting a nearly flat drain curve, and are made using high-grade and refined raw materials. Manufactured in Germany, the Power One Zinc Air Hearing Aid Battery is mercury-free and designed to be both durable and environmentally friendly.

Hearing aid batteries size 13